A/V amplifier will power on then shut off after about 5 seconds. plz help

When i disconnect the display cable from the board on the right side of the it will start up as it should, but will no display will pop up do to the fact that its the power for the video portion of the amplifier. But when i plug the cable back in after it has started up the screen still doesnt display and it also doesnt shut off. if i plug in the cable and start it up until the display kicks on and then unplug the cable it finishes its start up without shutting down, then i plug the cable back in and it displays DSPEUPGRADE. i could use some help diagnosing the problem more plz help

6 Suggested Answers

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).click here to download the app (for users in the US for now) and get all the help you need. Good luck!

Several components in the power supply maybe faulty, especially Tranisitor Q5110, Resistor R5114 and Diode D5102 on the power supply board. Check and replace these and also resolder the regulator IC's on the heatsink.

Hey guys! Im glad you found my solution on my blog, and posted it here. I hope you ccan fix yours, or get it replaced on warranty. Im happy to help you with anything, the capacitors i think was 4,7 uF, 100volt, not sure.
Here is the link to my solution: http://lemurt.wordpress.com/2008/08/18/defenition-of-waranty-void/
:D
/ lemurt

I decided to read this and I am not exactly 100 sure what the proplem is. I did want to offer a suggestion though. If you are having problems with both the screen and an external monitor, the problem may be with the graphics hardware. If you have a card, it may need to be replaced. If not, i'm very sorry. The motherboard may need to be replaced. Hope this helps.

Hi Turecki, It's a moderately easy fix for this common issue with HP/Compaq Laptops. Simply go to ebay, purchase an "inverter" board built for a NC8000 laptop can range from $10-$50 just purchase one with a minimum 6 month warranty. Its about a 0.5 inch by 15 inches. Unscrew all of the tiny phillips screws located and hidden behind black rubber covers on the LCD screen. Pop off the plastic LCD cover and replace the inverter board located at the bottom of the LCD (plug & play). Put it all back together and voila...problem fixed.

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

Related Questions:

Hi,Most car audio amplifiers don't have on off switches.So to reset the amplifier, disconnect it from the power source, from the car battery side.Disconnect the positive side (red) first. Then the negative side (black)Or sometimes its easier to remove the fuse next to the battery for the amplifier.After its disconnected leave it disconnected for approx 5-10 min.

hi, may be ur amplifiers any of the output channel have some problem. that's why it goes off after power on, protecting ur speakers. disconnect all the speakers and inputs and then power on it if works check ur speakers and inputs. if not there is fault inside ur amplifier.ok

The amplifier is showing the protect mainly due to a safety feature on the power circuit. The fault could be failure or short in the output stages, short in the speakers, fault in the power ciicuit or the error amplifier that triggers the relay.

To trace the fault it is impotant to make the test in the main board, disconnect the power to output to confirm if the output is faulty. similarily disconnect the powering circuit one by one to identify. replace or disconnect to confirm. Hope this helps. Good day

2. Power cycle:
Follow the steps below to power cycle your all-in-one:1. Verify that the unit is switched on. Disconnect the USB/Ethernet cable from the All-in-One and also disconnect power cable from All-in-One and also from wall outlet.2. Wait 30 seconds.3. Plug in the power cable to All-in-One and also to wall outlet. and check the functionality.

3. Semi full reset
Reset the All-in-One to the factory default settings by using these instructions:

Shut Down to turn off your computer. Ensure that the computer is off and not in a power management mode. If you cannot shut down the computer using the operating system, press and hold the power button for 4 seconds.

Disconnect your computer and all attached devices from their electrical outlets. Disconnect any telephone or network cables from the computer

Remove any installed cards from the ExpressCard slot.

To help prevent damage to the system board, you must remove the battery from the battery bay before you service the computer. to do this, Turn the computer over, Slide the battery release latch until they click into place. Slide the battery out of the battery bay.

Turn the computer top-side up, open the display, and press the power button to ground the system board. Now you are ready to remove your Keyboard;

Removing the Center Control Cover, Remove the two screws securing the center control cover from the battery bay,

Turn the computer top side up, and open the display as far as it will open.

Insert a plastic scribe into the indent to lift the center control cover on the right side and ease the center control cover up.

Disconnect the cable from the media control buttons connector located underneath the center control cover. NOTICE: To avoid damage to the data cable connected to the system board, ensure that you do not pull hard when you are raising the center control cover. NOTICE: To avoid damage to the center control cover, do not lift the cover on both sides simultaneously.

Remove the center control cover.

Remove the two screws at the top of the keyboard. NOTICE: The key caps on the keyboard are fragile, easily dislodged, and time-consuming to replace. Be careful when removing and handling the keyboard.

Lift the keyboard and hold it up and slightly forward to access to the media control buttons connector.

Disconnect the media control buttons connector and remove the media control buttons cable.

Lift the keyboard and hold it up and slightly forward to access to the keyboard connector.

To disconnect the keyboard cable from the keyboard connector on the system board, rotate the keyboard connector latch toward the front of the computer.

Slide the keyboard cable out of the keyboard connector.

Replacing the Keyboard

Slide the keyboard cable into the keyboard connector.

Rotate the keyboard connector latch to secure the cable.

Align the tabs along the bottom of the keyboard and slide them under the palm rest.

Press on the right edge near the top to snap the keyboard into place.

Replace the two screws on the top of the keyboard.

Replacing the Center Control Cover

Reconnect the media control buttons cable to the connector below the keyboard.

Align the tabs along the bottom of the keyboard and slide them under the palm rest.

Press on the right edge near the top to snap the keyboard into place.

Replace the two screws on the top of the keyboard.

Reconnect the media control buttons connector to the center control cover.

Insert the left edge of the center control cover.

Press from left to right until the cover snaps into place.

In the battery bay, replace the two screws that secure the center control cover.

Overload maybe. If the amp is run at an improper impedence, the amp will shut down. If you are "CLIPPING" speakers / subwoofers the light will blink to indicate a hard clip . Example: 4ohm/2ohm stable amp with 4 ohm subs wired at 1 ohm.

There is some way to change a protection (fuse?). No. The fuse usually was not broken. How long did your amp turn on?3 seconds (DC protect) OR immediately shut down (Over Current protect)? How to confirm?1.Unplug the amp.2.Remove the metal cover.3.You will see a long vertically installed pre-amp board mounted next to those large power transistors fixed by 12 screws on a large aluminium heat sink.4.Remove this long vertically installed board mounted by 2 screws.5.With 2 screws removed, just pulling this board out and hold it with one hand.6.Plug the amp and switch it on.7.If your amp stays ON forever, the problem is from this long board.8.If switch off at once, the problem is from power amp board.Try the above- mentioned steps. I will tell you what to do next. Just search you tube for SR600 cap replacement. I have written an email here. Write an email to me if you want to fix this amp.

Before you begin any removal or installation procedures:
1. Shut down the computer. If you are unsure whether the computer is
off or in hibernation, turn the computer on, and then shut it down
through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power cord.
4. Remove the battery by following these steps:
a. Turn the computer upside down with the front panel
toward you.
Close the computer.
3. Turn the computer upside down with the front panel
toward you.
4. Remove the three Phillips PM2.5×5.0 screws that secure
the switch cover to the computer.
5. Turn the computer display-side up with the front toward you.
6. Open the computer as far as possible.
7. Lift the rear edge of the switch cover and swing it forward
until it rests on the keyboard.
8. Release the zero insertion force (ZIF) connector 1 to which
the LED board cable is connected and disconnect the cable 2
from the LED board.
9. Remove the switch cover.
Remove the Keyboard:
Remove the four Phillips PM2.5×7.0 screws that secure the keyboard to the computer.
Turn the computer display-side up with the front panel
toward you.
5. Open the computer as far as possible.
6. Lift the rear edge of the keyboard 1 until it rests at an angle.
7. Slide the keyboard 2 back to disengage the tabs on the front
edge of the keyboard from the top cover.
8. Swing the keyboard 3 forward until it rests on the palm rest.
Release the ZIF connector 1 to which the keyboard cable is connected and disconnect the keyboard cable 2 from the system board.10. Remove the keyboard.

Remove the Speaker Assembly:
Disconnect the speaker assembly cable 1 from the power button board.
5. Remove the two Phillips PM2.5×4.0 screws 2 that secure the speaker assembly to the computer.
6. Remove the speaker assembly 3.
Reverse directions to replace everything.

With your multimeter set to DC volts and the black meter lead on the ground terminal of the amp, touch the red lead alternately to the B+ and remote terminals as the amp shuts down. If the voltage drops below ~11 volts, you need to check the wiring feeding whichever line is dropping too low.

If the voltage remains near or above 12v, disconnect all speaker wires and signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.